Fixing tool and image forming apparatus

A fixing tool includes a pair of arms, a holding portion, and a claw portion. The arms are capable of being inserted into and pulled out from through holes formed respectively in a sheet support plate, which supports a sheet stored in a sheet feeder of an image forming apparatus such that the sheet can be lifted and lowered, and in a bottom portion of the sheet feeder. The holding portion is provided so as to project from a predetermined position on each of the arms and capable of holding the sheet support plate and the bottom portion. The claw portion is provided so as to project inward from a distal end of each of the arms and capable of being inserted between an integrated circuit mounted in the image forming apparatus and a mounting target portion which the integrated circuit is mountable to and detachable from.